package other;

import java.util.HashSet;

public class hashsettest {
    public static void main(String[] args) {
        HashSet<Integer> we=new HashSet<Integer>();
        HashSet<Integer> us=new HashSet<Integer>();
        we.add(1);
        if (we.isEmpty()){
            System.out.println(we);
        }else {
            System.out.println(us);
        }

    }
}
